/*
 *  Copyright 2009 Lucas Nazário dos Santos
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package net.sourceforge.retriever.frontier;

import java.util.List;

/**
 * TODO Write javadoc.
 */
public interface Frontier {


	/**
	 * TODO Write javadoc.
	 */
	void enqueue(FrontierUrl frontierURL);

	/**
	 * TODO Write javadoc.
	 */
	List<FrontierUrl> dequeue();

	/**
	 * TODO Write javadoc.
	 */
	void notifyFetchedIp(String ip);

	/**
	 * TODO Add javadoc.
	 */
	boolean hasURLs();

	/**
	 * TODO Add javadoc.
	 */
	void reset();

	/**
	 * TODO Write javadoc.
	 */
	void setIntervalBetweenFetchesInMillis(final long time);

	/**
	 * TODO Write javadoc.
	 */
	void setIntervalBetweenFetchesInMillis(final String ip, final long time);
}